Timeline

Colored text indicates events that occur in alternate timelines and to what created or erased those timelines.

44 BC

• Cavendish and Dakota detonate a time grenade, erasing the 29th of February. Though due to it being one fourth defused, every fourth year the day remains. These years were known as leap years.
• Julius Caesar is murdered. This event is foretold by a soothsayer, who is revealed to be Vinnie Dakota.

1803

• The Mississippi Purchase takes places.
• Dakota arrives and prevents the Mississippi Purchase, erasing that timeline and leading to the Louisiana Purchase taking place.

1871

• A Murphy family vacation encounters the Great Chicago Fire.

1875

• Sheriff Murphy meets Balthazar Cavendish and Vinnie Dakota. His presence, according to Dakota, provokes time travelers to get stuck in this year.

1906

• The Murphy family has a vacation in San Francisco during the 1906 San Francisco earthquake.

1912

• A Murphy family vacation survives the Sinking of the RMS Titanic

1937

• A Murphy family vacation is taken on the Hindenburg.

1955

• Derek exits the time stream and starts planning to takeover the world.
• Derek exits the time stream and is confronted and killed by a future Orton Mahlson and Professor Time, erasing the timeline where Derek takes over the world.

1960s

• Heinz Doofenshmirtz is born.

1965

• Cavendish, Dakota, and Milo arrive in a time machine and inspire Orton Mahlson to create The Zone.
• Orton is kidnaped and impersonated by Derek who wants to use the proceeds from the Doctor Zone franchise to finance his conquest of the earth.
• Orton escapes with the time travellers to the future. During the escape, Dakota sends a warning to their past selves.
• A future Orton, Cavendish, Dakota, Doofenshmirtz, and Perry arrive and watch the past Orton escape. They are spotted by the pistachions and are chased back to their timeship.
• Without the creator, the Doctor Zone franchise collapses after two episodes.
• Orton is returned to his time by Professor Time and creates the Doctor Zone Franchise.

1970s

• Wyatt Burp Orange Soda is discontinued due to its detrimental effects on the environment.

1983

• Brick and Savannah arrive with Cavendish and Dakota at Dr. Grueber's lab as part of their mission dealing with an unknown substance. Cavendish knocks the substance out of Bricks hand and contaminates the local water system, having dire consequences in the future. Brick and Savannah travel back in time to fix it.
• Brick and Savannah arrive with Cavendish and Dakota at Dr. Grueber's lab as part of their mission dealing with an unknown substance. A future Brick and Savannah arrive and prevent the water system becoming contaminated, erasing that timeline.
• Brick and Savannah arrive with a future Brick and Savannah at Dr. Grueber's lab and presumably complete their mission while straightening out time.

1990s

• Vanessa Doofenshmirtz is born.
• Jeremy Johnson is born.
• Sara Murphy is born.
• Candace Flynn is born.

2000s

• Zack Underwood is born.
• Charlene and Sharon Brulee are born.
• Milo Murphy is born.
• Melissa Chase is born.
• Ferb Fletcher is born.
• Buford Van Stomm is born.
• Phineas Flynn is born.
• Isabella Garcia-Shapiro is born.
• Baljeet Tjinder is born.

2010s

• Milo Murphy and Melissa Chase become friends in primary school.
• Perry is first assigned to Doofenshmirtz a few years before the series starts.
• The Llama Incident.
• Zack Underwood moves to Danville and becomes friends with Milo Murphy and Melissa Chase. The beginning of the series.
• A Sentient Blob is accidentally created, which is absorbed into a pistachio tree, creating King Pistachion.
• Brick and Savannah steal an unknown substance. Cavendish and Dakota tag along, asking for an intertemporal communication device, and end up following them into the past.
• Brick and Savannah steal an unknown substance. Cavendish and Dakota tag along, asking for an intertemporal communication device, and a future version of Brick and Savannah arrive and give them one, preventing them from going to the past and erasing that timeline.
• A giant rat attacks Danville.
• Cavendish and Dakota realise Milo is always around when their Pistachios are destroyed.
• Cavendish and Dakota successfully save the sapling King Pistachion from Murphy's Law, creating a new timeline.
• Cavendish and Dakota witness Mr Block being captured by Pistachions in the future and steal Brick and Savannah's time machine to check what's going on, accidentally bringing Milo with them.
• Sara, Melissa, and Zack meet with Orton Mahlson while looking for Milo. He gives them a letter from 1965 that reveals Milo will be at their school.
• Sara, Melissa, and Zack find the Pistachions arriving at Jefferson County Middle School shortly before Milo, Cavendish, and Dakota. They kill the sapling King Pistachion, erasing the timeline the Pistachions came from, thus erasing the Pistachions.
• Milo receives a warning from Dakota from 1965 and he, Cavendish, and Dakota travel back to investigate it.
• Derek reveals his army of Pistachions, who have been using rubber human suits to infiltrate society. They lay siege to Danville, capturing most of the population.
• Milo, Cavendish, and Dakota return with Orton in a broken time machine. To prevent the current pistachion invasion, they seek out Doofenshmirtz's help to construct a new time machine.
• Zack and Melissa escape the Pistachion prison at Lard World with Baljeet and Buford. While escaping they run past Derek as he explains his plan.
• Doofenshmirtz constructs a working time machine with the time juice from a clock Dakota gave Milo from 2175. Doofenshmirtz, Perry, Cavendish, Dakota, and Orton travel back in time as Milo leads the pistachions away.
• Zack, Melissa, Baljeet, and Buford run into Candace and are all saved by Phineas and Ferb shortly before meeting up with Milo.
• They then investigate Murphy's Law and are able to construct a mech that can direct it's influence for use as a weapon against the pistachions.
• Doofenshmirtz, Perry, Cavendish, Dakota, and Orton are ejected out of the time continuum on the lost island of Dakotas, who they acquire the help of to retake Danville.
• The pistachions capture the children investigating Murphy's Law and bring them to the Lard World prison to be turned into Pistachions.
• The Lost Dakotas and the Fireside Girls arrive at Lard world and everyone fights the pistachions.
• Most Danvillians are turned into Pistachions, but Professor Time from the future arrives and takes Orton and Milo's letter back to 1955 to prevent the invasion.
• Doofenshmirtz Evil Incorporated is destroyed, and Dr. Doofenshmirtz begins living with Milo.
• Cavendish and Dakota are banished to this point in time after being convicted for messing with time.
• Octalians attempt to abduct Milo Murphy to learn about his probability ions, but lose their ship to Murphy's Law.
• Brigette Murphy's goulash dish is struck by many of Doofenshmirtz's inators at the same time. The crock pot becomes fused to a versatile robot body and gains sentience, thus becoming The World's Greatest Goulash. Shortly after, the goulash is accidentally sealed in a time capsule.
• The Octalians successfully abduct Milo and bring him to their planet Octalia, while Milo's friends pursue them in the Octalian ship that previously crashed.
• With the humans help, the Alien Commander and the Octalians save Orgaluth and their planet from the destructive power of Orgaluth's Law by spreading it's effect out among the populace.

2030s

• Doofenshmirtz becomes Professor Time.

2085

• Cavendish and Dakota were assigned to protect pistachios up till this date. Presumably if they can be kept alive up till this date they will escape extinction.

2175

• Cavendish, Dakota, and other B.O.T.T. employees originate from this year.
• King Pistachion raises and attacks with an army of Pistachions in a plot to takeover the world. They take over the capital building and the time travel Bureau and focus on containing all time travel related personnel and technology so that no one can undo their world conquest.
• Cavendish, Dakota, and Milo arrive in the future and find the Pistachions have taken over the world.
• A second set of Cavendish, Dakota, and Milo arrive from the future at the library to investigate the Pistachion uprising. Upon seeing the first group walking right towards some Pistachions, they throw a peach they picked up earlier at them. The first group are halted and pick up the peach, and are alerted of the Pistachions.
• After learning of the origins of the Pistachion invasion, the second group escape into the time vortex from the Pistachions travelling after them.
• The first group of Cavendish, Dakota, and Milo make it back to their time machine and travel back ten minutes, with the Pistachions following in their own time vehicle.
• Future versions of Cavendish and Dakota arrive shortly before the Bureau Christmas party and hide two mech suits in giant presents.
• At the Bureau Christmas party, Dakota eats an eggroll that Cavendish wanted and the ensuing argument ends their friendship.
• At the Bureau Christmas party, a future Cavendish and Dakota try and prevent their current selves argument, erasing the previous timeline, but end up foiling each other's plans. Dakota eats an eggroll that Cavendish wanted and the ensuing argument ends their friendship. The future Cavendish and Dakota travel back to try again.
• At the Bureau Christmas party, two lots of future Cavendish and Dakota try and prevent their current selves argument, erasing the previous timeline, but end up foiling each other's plans. Dakota eats an eggroll that Cavendish wanted and the ensuing argument ends their friendship. The future Cavendishs and Dakotas travel back to try again.
• At the Bureau Christmas party, three lots of future Cavendish and Dakota try and prevent their current selves argument, erasing the previous timeline, but end up foiling each other's plans. Dakota eats an eggroll that Cavendish wanted and the ensuing argument ends their friendship. The oldest versions of Cavendish and Dakota decide to work together. The future Cavendishs and Dakotas travel back to try again, creating a new timeline.
• At the Bureau Christmas party, a future Cavendish and Dakota crash the party with mech suits, erasing the previous timeline. This doesn't prevent Dakota from eating an eggroll that Cavendish wanted and the ensuing argument ends their friendship. The future Cavendishs and Dakotas travel back to try again.
• At the Bureau Christmas party, future versions of Cavendish and Dakota crash the party with mech suits and an army of dinosaurs, erasing the previous timeline. This doesn't prevent Dakota from eating an eggroll that Cavendish wanted and the ensuing argument ends their friendship. The future Cavendishs and Dakotas travel back to try again.
• At the Bureau Christmas party, future versions of Cavendish and Dakota crash the party with mech suits and an army of dinosaurs and aliens, erasing the previous timeline. This doesn't prevent Dakota from eating an eggroll that Cavendish wanted and the ensuing argument ends their friendship. The future Cavendishs and Dakotas travel back to try again.
• At the Bureau Christmas party, future versions of Cavendish and Dakota crash the party with mech suits, an army of dinosaurs and aliens, and a pirate ship, erasing the previous timeline. This doesn't prevent Dakota from eating an eggroll that Cavendish wanted and the ensuing argument ends their friendship. The future Cavendishs and Dakotas travel back to try again.
• At the Bureau Christmas party, future versions of Cavendish and Dakota crash the party with mech suits, an army of dinosaurs and aliens, and a pirate ship. The latest version of Cavendish and Dakota reveal their identity and directly confront Cavendish and Dakota, erasing the previous timeline. Mr Block catches them breaking all of the Bureaus time regulations and gets them all in trouble.
• At the Bureau Christmas party, future versions of Cavendish and Dakota crash the party with mech suits, an army of dinosaurs and aliens, and a pirate ship. The latest version of Cavendish and Dakota reveal their identity and directly confront Cavendish and Dakota, erasing the previous timeline. Mr Block catches them breaking all of the Bureaus time regulations but a future Mr Block tells him to let it slide, erasing the previous timeline. Cavendish and Dakota make up, erasing all previous selves who weren't friends.
• After finding Cavendish and Dakota guilty of breaking time laws when Dakota created time copies of himself to save Cavendish, they are fired from the Bureau of Time Travel and banished to the past.

2195

• Dakota publishes a successful autobiography about his journey becoming a famous pop star. Both discontent, Cavendish and Dakota travel back in time to fix their friendship.
• After living in a world without the achievements of Cavendish and Dakota, Mr Block goes back in time to fix his mistake.
• Cavendish and Dakota publish a successful autobiography about their past adventures in time travel and their journey to becoming famous pop stars.

Between 2195 and 3000

• Some Screech Owl drones were accidentally activated, starting The Great Screech Owl War of Millennium 2.
• After 200 years of brutal war, the Screech Owls were defeated by The World's Greatest Goulash after they were released from their time capsule. Thus the war was ended and humanity was once again allowed to flourish on planet earth.